When we reach for an object, for example, a cup, is the force used to hold it a reflex? Which sensorial information is used to select the force to hold it?
Why I am interested in this question
With the development of robots with dexterity, it is necessary to develop a minimal amount of sensors so they can choose the strength to hold an object. Objects that look heavy and slippery need more force, while objects that are delicate need a lower force. Do we unconsciously use visual information to decide the force to hold an object? Can this be called a reflex?
When we reach for an object and it feels painful to hold it (it is too hot or too sharp) we immediately release it, is that a reflex?
In my search I found mostly results about the grip reflex of newborns. Is it Completely lost in adults?
(a personal reason) recently, I noticed that my grip force calculation is kind of “uncalibrated”. I am dropping cups, tools, my cellphone, more frequently than before. However this is not a problem of grip Force or shaking, I can hold myself on a bar with one hand and I have zero hand shaking on my hands. So, when I consciously choose to hold it, I have force, but when I am not thinking of which force to apply, I drop things. Note: this question is not for self diagnosis, this is just the initial observation that sparked my interest in the question.